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Finding the Fourth Proportional to 5,245.88, 7,243.98 and 3,917.30

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Solution

The fourth proportional to 5,245.88, 7,243.98 and 3,917.30 is: 5,409.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.88 : 7,243.98 = 3,917.30 : x
  2. Step 2: Convert to fraction form
    5,245.88/7,243.98 = 3,917.30/x
  3. Step 3: Cross multiply
    5,245.88x = 7,243.98 × 3,917.30
  4. Step 4: Simplify right side
    5,245.88x = 28,376,842.85
  5. Step 5: Solve for x
    x = 28,376,842.85/5,245.88
  6. Step 6: Final answer
    x = 5,409.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.